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트렌드 검색
Urine formation starts in the liver. The liver breaks down proteins which creates poisonous waste products like Nitrogen. This waste liquid is called urea.
When the body runs out of water, the Hypothalamus stimulates thirst centers in the brain. Then, the Hypothalamus stimulates the Pituitary gland to begin the urination process.
Urea is created in the liver, and is then transported in the blood to the Kidneys. The Kidneys remove the urea from the blood and mixes it with water and other unnecessary substances to form urine.
In the Kidneys, there are millions of cleaning structures called Nephrons. Nephrons are the structures responsible for removing the urea from the blood.
The Pituitary Gland starts the urinary process by secreting the hormone ADH or Antidiuretic Hormone into the blood where it is sent to the Kidneys
There are 3 parts to Nephrons. One of the parts includes the wine-shaped Renal Capsule which contains blood vessels called the Glomerulus. Blood is forced through the Glomerulus to filter the blood further. More urea is taken out along with various nutrients and vitamins that the body could potentially need. Urine is formed and sent to the bladder while the nutrients is sent back to the body with the blood and proteins through the Renal Tubule.
LESSON 06.01 Notes
ADH is responsible for regulating the water content in the Kidneys
The Renal Tubule is responsible for transporting nutrients (water, glucose, etc.) and vitamins back to the body by reabsorbing it into the cells. The Renal Tubule is also responsible for making sure the blood maintains its composition.